Kroonstad pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Kroonstad is moderate; mugwort is moderate; cypress, eucalyptus, oak, mulberry, and plane are low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week nettle will increase; cypress, eucalyptus, oak, mugwort, mulberry, and plane will decrease; grass will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | Low | 17/100 |
| Eucalyptus (Myrtaceae) | Low | 11/100 |
| Grass (Poaceae) | None | 0/100 |
| Oak (Quercus) | Low | 8/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | Moderate | 29/100 |
| Mulberry (Morus) | Low | 16/100 |
| Plane (Platanus) | Low | 13/100 |
| Nettle (Urtica) | None | 0/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | Low | 18/100 | |
| Eucalyptus (Myrtaceae) | Low | 12/100 | |
| Grass (Poaceae) | None | 0/100 | |
| Oak (Quercus) | Low | 9/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | Moderate | 32/100 | |
| Mulberry (Morus) | Low | 17/100 | |
| Plane (Platanus) | Low | 14/100 | |
| Nettle (Urtica) | None | 0/100 |
Local Environmental Conditions
Kroonstad's Free State Highveld Vals River setting features acacia, eucalyptus, and willow as the main tree pollen sources alongside mixed Highveld grassland. Exposure varies between the greener Vals River corridor residential areas and the more built-up commercial corridors, while the Vals River corridor provides locally significant riparian pollen and the surrounding Highveld farmland contributes substantial grass and crop pollen throughout the summer rainfall season.
Kroonstad's Free State Highveld season opens in August with acacia and eucalyptus before grass from surrounding Highveld farmland peaks through November and December. The Vals River corridor contributes locally significant riparian pollen, while the dry winter months suppress most production and the summer rainfall pattern concentrates the main season in spring and early summer throughout this Free State Highveld town.
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Frequently Asked Questions About Pollen in Free State
Is pollen high in Kroonstad right now?
On 20 September 2026, overall pollen levels in Kroonstad are moderate. Artemisia is the main contributor to airborne pollen, while myrtle, platanus, oak, cypress, and morus remain at lower levels
Will pollen levels change in Kroonstad tomorrow?
On 21 September 2026, pollen conditions in Kroonstad will be similar to today, with myrtle at low levels, platanus at low levels, oak at low levels, artemisia at moderate levels, cypress at low levels, morus at low levels
Is pollen expected to decrease in Kroonstad this week?
According to the five-day outlook, myrtle, platanus, oak, artemisia, cypress, and morus pollen levels are expected to gradually decrease, while urtica pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Kroonstad?
On 20 September 2026, Artemisia is the dominant pollen source in Kroonstad. myrtle, platanus, oak, cypress, and morus are also present but at lower levels. grass and urtica are not currently active.
When is pollen season in Kroonstad?
How often is the Kroonstad pollen forecast updated?
The Kroonstad pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Kroonstad come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Kroonstad based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Kroonstad, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
